Finding the Fourth Proportional to 17,377.74, 23,981.27 and 9,419.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,377.74 : 23,981.27 = 9,419.90 : x
2. Step 2: Convert to fraction form
   17,377.74/23,981.27 = 9,419.90/x
3. Step 3: Cross multiply
   17,377.74x = 23,981.27 × 9,419.90
4. Step 4: Simplify right side
   17,377.74x = 225,900,998.27
5. Step 5: Solve for x
   x = 225,900,998.27/17,377.74
6. Step 6: Final answer
   x = 12,999.45